Question

IF 2 cos 3theta = 1 then theta =?​

Answer 1

Answer:

20°

Step-by-step explanation:

2cos3theta = 1

cos3theta = 1/2

cos3theta=cos60°

3theta = 60

theta = 20°

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Answer 2

Answer:

theta = 20°

Step-by-step explanation:

2 cos 3 theta = 1

cos 3 theta = 1/2

cos 3 theta = cos 60°

3 theta = 60°

theta = 60°/3

theta = 20°